<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>c.html</title>
</head>

<body style="border:1px solid green">
    c页面
    <script>
        console.log("接受自a页面", location.hash)
        let iframe = document.createElement("iframe")
        iframe.src = "http://localhost:3000/b.html#send-to-a-page"
        document.body.appendChild(iframe)

    </script>
</body>

</html>